Aamir Khan is actively filming a song sequence for ‘Sitaare Zameen Par,’ a spiritual successor to ‘Taare Zameen Par,’ co-starring Genelia D’Souza. Choreographed by Vijay Ganguly, the upbeat track was filmed in Mumbai, potentially for the film or end credits. Post-production nears completion, with promotional campaigns expected in early May for the RS Prasanna directorial.